The two major types of bonds are ionic and covalent bonds. List one similarity between these bonds and one difference.
Ionic and covalent bonds are similar because they both deal with the actions of valence electrons. They are different in how the valence electrons interact to form the bonds. Ionic bonds are formed by transferring valence electrons from one atom to another in order to create a full octet. This transfer creates electrostatic charges which keep the atoms together in a bond. In covalent bonds the valence electrons share space between the atoms in order to create a full octet for both atoms.
Compare and contrast the mitosis and meiosis.
Mitosis occurs within all somatic cells and is a process of cell division. One original cell divides into two cells containing 23 identical pairs of chromosomes in each cell. Meiosis is similar to mitosis in that it is also a cell division process. However, Meiosis only occurs within sex cells (egg and sperm cells). Instead of forming two identical daughter cells (the result of mitosis), four unique cells are formed. These cells have 23 total chromosomes rather than 23 pairs of chromosomes.
Describe the movement of the atoms in a solid and the movement of atoms in a gas by creating a real world analogy.
The atoms in a solid stay in one place and vibrate within that space. They are like a polite audience in a movie theater. The people in the audience will stay in their seat, but they will move and fidget within their seat. However, the atoms in a gas have much more energy. They move all around their container. The movement of these particles can be equated to students within a school building. They stay within their container but are free to move around to any part of the container.